Method for detecting flow abnormity of wireless sensor network based on GM model
A wireless sensor and network traffic technology, applied in the field of network security, can solve problems such as large algorithm complexity, achieve the effect of accurate prediction value, guarantee the latest effectiveness, and easy detection
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[0034] The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:
[0035] A flow anomaly detection method for a wireless sensor network based on the GM model of the present invention, the schematic flow chart of the scheme is as follows figure 1 As shown, the following uses as figure 2 The shown wireless sensor network traffic data containing abnormal traffic is used as an example to verify the method. The traffic data is collected by the University of North Carolina. This example uses the humidity value data stream for analysis, which specifically includes the following steps:
[0036] S1: Select a sliding window whose size is Wind.
[0037] The selection of Wind value should be as small as possible under the premise of ensuring the modeling accuracy, so as to reduce the complexity of the algorithm. At the same time, since the minimum modeling length of the GM(1,1) model is 4, finally according to the actual mea...
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